from dataclasses import dataclass
from typing import Optional
from datetime import datetime

@dataclass
class SocialAccount:
    """Social account model representing a social media account."""
    id: str
    user_id: str
    social_network: str
    account_name: str
    token: Optional[str] = None
    sub: Optional[str] = None
    given_name: Optional[str] = None
    family_name: Optional[str] = None
    picture: Optional[str] = None
    created_at: Optional[datetime] = None
    
    @classmethod
    def from_dict(cls, data: dict):
        """Create a SocialAccount instance from a dictionary."""
        return cls(
            id=data['id'],
            user_id=data['user_id'],
            social_network=data['social_network'],
            account_name=data['account_name'],
            token=data.get('token'),
            sub=data.get('sub'),
            given_name=data.get('given_name'),
            family_name=data.get('family_name'),
            picture=data.get('picture'),
            created_at=datetime.fromisoformat(data['created_at'].replace('Z', '+00:00')) if data.get('created_at') else None
        )
    
    def to_dict(self):
        """Convert SocialAccount instance to dictionary."""
        return {
            'id': self.id,
            'user_id': self.user_id,
            'social_network': self.social_network,
            'account_name': self.account_name,
            'token': self.token,
            'sub': self.sub,
            'given_name': self.given_name,
            'family_name': self.family_name,
            'picture': self.picture,
            'created_at': self.created_at.isoformat() if self.created_at else None
        }